/// <summary>
/// Called on POINTUPDATED_ACK, whenever a point changes
/// in some other running client. Updates local points respectively
/// </summary>
/// <param name="packet"></param>
private void OnPointUpdatedAck(PointUpdatedAck packet)
{
foreach (var polygon in _polygons.Polygons)
{
if (!(polygon.Tag is PolyZone zone))
{
continue;
}
if (int.Parse(zone.Id) != packet.ZoneId)
{
continue;
}
if (packet.Added)
{
var pointLatLng = new GMap.NET.PointLatLng(packet.Lat, packet.Lng);
polygon.Points.Insert(packet.Index, pointLatLng);
zone.Geometry.Insert(packet.Index, pointLatLng.ToGeometry(packet.PointId));
}
else if (packet.Removed)
{
polygon.Points.RemoveAt(packet.Index);
zone.Geometry.RemoveAt(packet.Index);
}
else
{
var i = zone.Geometry.FindIndex(x => x.Id == packet.PointId);
var pt = new GMap.NET.PointLatLng(packet.Lat, packet.Lng);
polygon.Points[i] = pt;
zone.Geometry[i] = pt.ToGeometry(packet.PointId);
}
UpdatePolygonLocalPosition(polygon);
Refresh();
break;
}
}
/// <summary>
/// Gets called when the cursor moves on the map
/// </summary>
/// <param name="e">Mouse event arguments</param>
protected override void OnMouseMove(MouseEventArgs e)
{
if (!_readOnly)
{
if (e.Button == MouseButtons.Left)
{
if (Equals(_currentRectMarker, null))
{
_pointer.Position = FromLocalToLatLng(e.X, e.Y);
// Handles polygon dragging on the map
if (CurrentPolygon != null && CurrentPolygon.IsMouseOver)
{
for (var i = 0; i < CurrentPolygon.Points.Count; i++)
{
var pnew = new GMap.NET.PointLatLng(
CurrentPolygon.Points[i].Lat + _pointer.Position.Lat - _previousMouseLocation.Lat,
CurrentPolygon.Points[i].Lng + _pointer.Position.Lng - _previousMouseLocation.Lng
);
CurrentPolygon.Points[i] = pnew;
var zone = (PolyZone)CurrentPolygon.Tag;
var id = zone.Geometry[i].Id;
zone.Geometry[i] = pnew.ToGeometry(id);
}
UpdatePolygonLocalPosition(CurrentPolygon);
}
}
// Handles dragging a point of a polygon
else if (CurrentPolygon != null)
{
var pnew = FromLocalToLatLng(e.X, e.Y);
var pIndex = (int?)_currentRectMarker.Tag;
if (pIndex.HasValue && pIndex < CurrentPolygon.Points.Count)
{
CurrentPolygon.Points[pIndex.Value] = pnew;
var zone = (PolyZone)CurrentPolygon.Tag;
// TODO: Find a workaround for waiting for a server response in this
// non-asynch method. Currently it causes the gui to hang up
if (_isWaitingForResponse)
{
while (_isWaitingForResponse)
{
Thread.Sleep(300);
}
}
var id = zone.Geometry[pIndex.Value].Id;
zone.Geometry[pIndex.Value] = pnew.ToGeometry(id);
UpdatePolygonLocalPosition(CurrentPolygon);
_pointer.Position = pnew;
CurrentPolygon.PointsHasChanged();
_currentRectMarker.Position = pnew;
// TODO: Remove real-time update
// It is very inefficent
//await Task.Run(() => { Sql.Instance.UpdatePoint(zone.Geometry[pIndex.Value]); });
}
}
}
else if (IsDrawingPolygon)
{
// Handles dragging a point of a NEW polygon on the map
_currentNewRectMaker.Position = FromLocalToLatLng(e.X, e.Y);
_currentDrawingPolygon.Points[_currentDrawingPolygon.Points.Count - 1] =
_currentNewRectMaker.Position;
UpdatePolygonLocalPosition(_currentDrawingPolygon);
}
_previousMouseLocation = FromLocalToLatLng(e.X, e.Y);
}
else if (e.Button == MouseButtons.Left)
{
_pointer.Position = FromLocalToLatLng(e.X, e.Y);
}
base.OnMouseMove(e);
}